Issue 99: RCS/RHR Suction Line Valve Interlock on PWRs
DESCRIPTION
Historical Background
On April 17, 1984, a DSI memorandum[1]on the subject of RHR interlocks for W plants d
Issue 98: CRD Accumulator Check Valve Leakage
DESCRIPTION
Historical Background
During the review of LaSalle, ASB identified a potential problem which could be generic to all BWRs.[1]
Issue 97: PWR Reactor Cavity Uncontrolled Exposures
DESCRIPTION
Historical Background
Over the past several years, the NRC staff has noted an unacceptably large number of overexposures and uncontrolled exposures associated with pressurized water reactor cavity entries
Issue 96: RHR Suction Valve Testing
DESCRIPTION
Historical Background
This issue was identified during the staff review of the Indian Point 2 and Zion PRAs[1]; in
Issue 95: Loss of Effective Volume for Containment Recirculation Spray
DESCRIPTION
Historical Background
This concern was raised by an NRC resident inspector who questioned the practice of leaving the refueling canal
Issue 94: Additional Low Temperature Overpressure Protection for Light-Water Reactors
DESCRIPTION
Historical Background
Low temperature overpressurization originally identified in NUREG 0371[1]as item A-26.
Issue 93: Steam Binding of Auxiliary Feedwater Pumps
DESCRIPTION
Historical Background
This issue was recommended[1]for prioritization by DSI after a review of the AEOD engineerin
Issue 92: Fuel Crumbling During LOCA
DESCRIPTION
Historical Background
Experiments conducted at several test facilities prior to 1984 showed that irradiated fuel can fragment (crumble) into small pieces during a LOCA.
Issue 91: Main Crankshaft Failures in Transamerica DeLaval Emergency Diesel Generators
DESCRIPTION
Historical Background
On August 12, 1983, one of the three emergency diesel generators (EDG) at the Shoreham Plant failed during overload testing as a result of a fractured c
Issue 90: Technical Specifications for Anticipatory Trips ICSB
DESCRIPTION
Historical Background
Reactor protection systems (RPS) or "scram" systems are tripped by many diverse signals.